Fundamental investigation and modeling of combustion characteristics of alkane isomers contained in next generation bio-fuels

2021 Fiscal Year Final Research Report

• Project/Area Number: 19H02078
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: Hiroshima University
• Principal Investigator: Daisuke Shimokuri 広島大学, 先進理工系科学研究科(工), 准教授 (40432687)
• Co-Investigator(Kenkyū-buntansha): 三好 明 広島大学, 先進理工系科学研究科(工), 教授 (60229903)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 燃焼 / 次世代バイオ燃料 / 着火遅れ / 燃焼速度

Outline of Final Research Achievements

In this study, high pressure shocktube with constrained volume strategy (HPST-CRV) has been successfully developed. Chemical ignition delay time (IDT), which is important parameter for combustors can be measured accurately for high pressure condition up to 30atm. IDT of saturated hydrocarbons obtained with HPST-CRV show that IDT is longer for highly branched isomers especially in low temperature conditions less than 1000K.　By mixing ethanol, which is currently used bio-fuel, IDT in high temperature region is found to be shortened.

Free Research Field

燃焼工学

Academic Significance and Societal Importance of the Research Achievements

本研究で構築された衝撃波管は，燃焼分野において初めて10atm以上で反応容積制限法（CRV法）を導入したもので，着火遅れの計測精度を大幅に向上させるものである．本装置の構築によって，今後燃焼数値計算の精度向上が期待される．
計測された着火遅れから，次世代バイオ燃料の着火特性が明らかとなった．また，エタノールとの混合の影響も明らかとなった．これらの結果は，次世代バイオ燃料や既存バイオ燃料であるエタノールの利用指針となるものである．